Graphical design for a boat



FIG. 1 is a side view illustration of a first embodiment of our graphical design for a boat;

FIG. 2 is a side view illustration of a second embodiment of our graphical design for a boat;

FIG. 3 is a side view illustration of a third embodiment of our graphical design for a boat; and,

FIG. 4 is a side view illustration of a fourth embodiment of our graphical design for a boat.

The broken line showing of environmental structure in FIGS. 1-3 for illustrative purposes only and forms no part of the claimed design.

The omission of a view indicates that the omitted view is plain and unornamented. 

The ornamental design for a graphical design for a boat, as shown and described. 